Hi all,
I am struggling to create unique pairwise
combinations. I want to have nC2 combination i.e. from
a n number of observations I want to have unique
pairs. Can anyone help? I gave an example below to
explain what I want. Thanks a lot.
I have my data in the following format
P L
1 1.4
1 2.4
1 3.1
1 0.8
2 0.9
2 0.4
2 2.3
3 1.6
3 4.5
4 6.0
I want the following combination
P L1 L2
1 1.4 2.4
1 2.4 3.1
1 3.1 0.8
1 0.8 1.4
1 1.4 3.1
1 0.8 2.4
2 0.9 0.4
2 0.4 2.3
2 2.3 0.9
3 1.6 4.5
4 0 0
-Mazhar
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